M1 Max and max external monitor resolution. ?

[Delarock]

Hi i have technical question, M1 max should support up o 3 6K displays at 60 hz.
It has thunderbolt 4 port which should have support of display port 2.0 version (according to official site about thunderbolt tech) , which should support up to 16k display at 60 hz and HDR. (pretty huge amount of bandwitch) There is some limitation of apple?

For example my future dream monitor gonna be 32 inch 6k 120 hz pro motion ( if apple create such a external monitor or any other company) , will it be supported? There are few 8k monitors on market for example are they supported with this new mac? TB4 should support 80 gb of bandwitch - which is enough for 8k 144 hz (dsc)

 

[joevt]

Thunderbolt 4 is limited to DisplayPort 1.4. Which page suggests DisplayPort 2.0 is supported?

6K 120Hz requires a pixel clock of 2620 MHz. DisplayPort 1.4 can do that using DSC @ 8bpp but I've only seen DSC @ 12 bpp used by Apple.

8K 60Hz requires a pixel clock of 2067 MHz. DisplayPort 1.4 can do that using DSC @ 12bpp or 4:2:0 @ 8 bpp.
For HDMI 2.1, 8K 60Hz uses a pixel clock of 2376 MHz which HDMI 2.1 40 Gbps can do with DSC @ 12 bpp and DisplayPort 1.4 can do using DSC @ 8bpp.

I haven't seen 8K work on a Mac beyond 30Hz (DisplayPort 1.4 8bpc RGB no DSC)

 

[Delarock]

 

[Delarock]

its just one source but maybe it is wrong

 

[joevt]

its just one source but maybe it is wrong

As far as I know, the DisplayPort capabilities has not changed between Thunderbolt 3 and Thunderbolt 4. The first Thunderbolt 3 devices were limited to DisplayPort 1.2.
Maybe future Thunderbolt 4 or USB4 controllers will include DisplayPort 2.0.